What should I do if I cannot play a disc, or dropped frames and/or sound interruptions occur during playback?

• Exit all running apps other than the playback app.

• Try using other playback apps, such as a DVD playback app.

• To play DVD media with Content Protection for Recordable Media (CPRM), you need to install a CPRM pack for the playback app on your VAIO computer.

• To play copyright protected Blu-ray Disc media continually, you need to update the AACS key.
  Follow a message displayed on the computer screen to update the AACS key. You can update it through the Internet.

• Uninstall the playback or writing app installed on your VAIO computer after purchase.
  For instructions on how to uninstall the app, refer to the help file included with the app or Windows Help and Support. [Details]